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Tests/LibELF: Test loading libraries with dynamic TLS

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The setup is a bit peculiar: both the definition and the use site of
these TLS variables have to be in a shared library, otherwise the linker
might relax the global-dynamic access mode to something that doesn't
require a `__tls_get_addr` call.
This commit is contained in:
Daniel Bertalan 2023-07-05 11:28:59 +02:00 • committed by Jelle Raaijmakers
parent ad9e674fa0
commit c63fe0e1f1
4 changed files with 106 additions and 6 deletions
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21
Tests/LibELF/TLSDef.cpp Normal file
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/*
* Copyright (c) 2023, Daniel Bertalan <dani@danielbertalan.dev>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibTest/Macros.h>
__thread int one = 1;
__thread int two = 2;
[[gnu::tls_model("initial-exec")]] __thread int three = 3;
[[gnu::tls_model("initial-exec")]] __thread int four = 4;
void check_increment_worked();
void check_increment_worked()
{
EXPECT_EQ(one, 2);
EXPECT_EQ(two, 3);
EXPECT_EQ(three, 4);
EXPECT_EQ(four, 5);
}